1in8B - A life, one in 8 billion
Right now, about four babies are born every second. Next, it's your turn to become one of them. Where you're born, your family, your sex — all decided by the world, just as it once was for you. Then you live that person's whole life in a few minutes.
The Book of Lives
- Be born somewhere in the world.
- Choose what matters as the years pass.
- Keep the moments that make this life yours.
If you were born right now
Weighted by each country's yearly births — being born in India is about 175× as likely as in Taiwan.
Child death, poverty, disease, war and loss appear here in the proportions real statistics say. Figures come from public data by the UN, World Bank and WHO; the events and writing are original. Ages 15+.
One in 8 billion: where might you be born?
Follow a life at reading pace. Stop at a turning point, open the country profile and see how its statistical background relates to the character's story.
1in8B is a life simulator about one in 8 billion: one character, a random birthplace and a life to follow. Read the passing years, make decisions at events and see how the starting circumstances, your choices and chance affect the story.
Put the birth certificate's odds in context
A country's share is its annual births divided by the dataset's total annual births. The certificate turns that share into an approximate one-in-N figure. It describes the chance of drawing a birthplace in this model, rather than recreating every detail of one child. Each new life is another draw, so returning to the same country is possible.
Read the four states with the timeline
Health, Joy, Mind and Bonds show the character's game state as it changes. Look at a focus option's effect hints before choosing it; study, work and time with friends can make different trade-offs. Open the profile to read the country indicators alongside the story. A high score promises no particular ending, and a national average cannot serve as a personal forecast.
Birthplaces are weighted by annual births
1in8B draws from a dataset covering 172 countries. Each country's annual number of births supplies its weight in the draw. Countries therefore do not have equal 1-in-172 chances: a country with more births in the dataset is more likely to appear. These are the simulation's probabilities, rather than a calculation of your personal chance of being born somewhere.
Choose your own pace
Read the birth certificate, then choose a focus as life moves forward. You can answer event choices yourself or enable automatic choices. Adjust the speed, pause to catch up with the timeline and star favourite moments. The character profile adds context, and the life summary gathers the outcome when the story ends.
Read the story alongside the numbers
Country statistics provide a background for the simulation; decisions and random events affect what happens within it. National averages cannot account for every individual. A simulated lifespan or cause of death is a game result, not a forecast of your health, income or future.
Before you begin
Is this the official 1in8b.life site?
No. 1in8B is an independent life simulation game, not the official 1in8b.life website. It does not claim an affiliation.
Do I need to register or pay?
No. You can play in the browser for free without creating an account.
Can I return to an unfinished life?
Yes, when browser storage is available. Saves belong to this browser and website; other domains or devices have separate progress, and clearing site data can remove saves.
What changes when I switch language?
The game supports 14 language options. Life history and cause of death translate too, and the current life continues rather than restarting.